This paper explores the challenges and strategies for rural revitalization in China, focusing on the preservation of cultural and architectural heritage. Using Gaotunzi Village, a traditional ethnic village in western Sichuan, as a case study, the authors propose a green design approach and optimization strategy for cultural and architectural heritage preservation. The detailed architecture and structure design for the old temple retrofitting and new museum construction are presented, emphasizing the retention of traditional building colors, styles, and materials. The land use planning for local public spaces and services is also demonstrated. The overall design strategy has been implemented in the local renovation construction program, showing promising results for sustainable rural revitalization and local heritage conservation. The work provides a typical design reference and application prototype for rural construction and modernization, particularly for traditional villages in developing countries. Key findings include the protection and exhibition of historical buildings, the integration of new constructions to enrich public spaces, and the application of prefabricated construction techniques to improve efficiency and quality.This paper explores the challenges and strategies for rural revitalization in China, focusing on the preservation of cultural and architectural heritage. Using Gaotunzi Village, a traditional ethnic village in western Sichuan, as a case study, the authors propose a green design approach and optimization strategy for cultural and architectural heritage preservation. The detailed architecture and structure design for the old temple retrofitting and new museum construction are presented, emphasizing the retention of traditional building colors, styles, and materials. The land use planning for local public spaces and services is also demonstrated. The overall design strategy has been implemented in the local renovation construction program, showing promising results for sustainable rural revitalization and local heritage conservation. The work provides a typical design reference and application prototype for rural construction and modernization, particularly for traditional villages in developing countries. Key findings include the protection and exhibition of historical buildings, the integration of new constructions to enrich public spaces, and the application of prefabricated construction techniques to improve efficiency and quality.